<template>
  <view>
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics">
        <view class="swiper-item">
          <image :src="item.pics_big" mode="widthFix" @click="preview(i)"></image>
        </view>
      </swiper-item>
    </swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info">
      <view class="goods-body">
        <view class="price" v-if="goods_info.goods_price">
          {{goods_info.goods_price}}
        </view>
        <view class="goods-item" >
          <view class="goods-name" v-if="goods_info.goods_name">
            {{goods_info.goods_name}}
          </view>
          <view class="goods-star">
            <uni-icons type="star" size="24"></uni-icons>
            <view>
             收藏 
            </view>
          </view>
        </view>
        <view class="goods-kd">
          快递: 免运费--{{total}}
        </view> 
      </view>  
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
      
      <view class="goods-content">
        <rich-text :nodes="goods_info.goods_introduce" ></rich-text> 
      </view>
      
    </view>
  </view>
</template>

<script>
  import {mapState,mapMutations,mapGetters} from 'vuex'
  export default {
    data() {
      return {
        goods_info:{},
        options: [ {
        			icon: 'shop',
        			text: '店铺',
        			info: 2,
        			infoBackgroundColor:'#007aff',
        			infoColor:"red"
        		}, {
        			icon: 'cart',
        			text: '购物车',
        			info: 0
        		}],
        	  buttonGroup: [{
        	      text: '加入购物车',
        	      backgroundColor: '#ff0000',
        	      color: '#fff'
        	    },
        	    {
        	      text: '立即购买',
        	      backgroundColor: '#ffa200',
        	      color: '#fff'
        	    }
        	    ]
      }
    },
    computed:{
      ...mapState('m_cart',['cart']),
      ...mapGetters('m_cart',['total']),
    },
    onLoad(options) {
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    watch:{
      //使用监听器指向一个对象，
      total:{
        handler(newVal){
          const findResult = this.options.find((x)=> x.text === '购物车')
          if(findResult){
            findResult.info=newVal
          }
        },
        //immediate属性用来声明此侦听器，是否在页面初次渲染时使用
        immediate:true
      }
    },
    methods: {
      ...mapMutations('m_cart',['addCart']),
      async getGoodsDetail(goods_id){
        const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
        if(res.meta.status!=200) return uni.$showMsg()
        // 使用字符串的 replace() 方法，为 img 标签添加行内的 style 样式，从而解决图片底部空白间隙的问题
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,'<img style="display:block;"')
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,'<img style="display:block;"').replace(/webp/g,'jpg')
        this.goods_info = res.message
      },
      preview(i){
        uni.previewImage({
          //预览时，默认显示图片的索引
          current:i,
          //所有图片url地址的数组
          urls: this.goods_info.pics.map(x=>x.pics_big)
          
        })
      },
      onClick (e) {
      	    uni.showToast({
      	      title: `点击${e.content.text}`,
      	      icon: 'none'
      	    })
            if (e.content.text === '购物车') {
                // 切换到购物车页面
                uni.switchTab({
                  url: '/pages/cart/cart'
                })
              }
      	  },
      buttonClick (e) {
            if(e.content.text=='加入购物车'){
              //组织一个商品信息对象
              const goods = {
                goods_id : this.goods_info.goods_id,
                goods_name : this.goods_info.goods_name,
                goods_price : this.goods_info.goods_price,
                goods_count:1,
                goods_small_logo: this.goods_info.goods_small_logo,
                goods_state:true//勾选状态
              }
              this.addCart(goods) 
            }
      	  }
    }
  }
</script>

<style lang="scss">
swiper{
  height: 750rpx;
  image{
    width: 100%;
    height: 100%;
  }
}
.goods-info{
  
  .goods-body{
    margin: 10px 0 0 10px;
    .price{
      font-size: 18px;
      color: red;
      font-weight: bold;
    }
    .goods-item{
      display: flex;
      font-size: 13px;
      padding: 10px 0;
      .goods-name{
        width: 83%;
        border-right: 1px solid #d1d1d1;
        padding-right: 2px;
      }
      .goods-star{
        margin: auto;
      }
    }
    .goods-kd{
      font-size: 11px;
      color: gray;
    }
  }
}
.uni-goods-nav{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
.goods-content{
  padding-bottom: 50px;
}
</style>
